2-(6-(3-(Dihydroxyamino)benzylidene)-5-oxo-5,6-dihydro-4lambda~5~-[1,3]thiazolo[2,3-b][1,3]thiazol-3-yl)-N-(2-methylphenyl)acetamide hydrobromide AIDS-157938 AIDS157938 NSC657572 (HYDOBROMIDE SALT)